JPS631020A - Electrolyte for capacitor - Google Patents
Electrolyte for capacitorInfo
- Publication number
- JPS631020A JPS631020A JP14458786A JP14458786A JPS631020A JP S631020 A JPS631020 A JP S631020A JP 14458786 A JP14458786 A JP 14458786A JP 14458786 A JP14458786 A JP 14458786A JP S631020 A JPS631020 A JP S631020A
- Authority
- JP
- Japan
- Prior art keywords
- boric acid
- electrolyte
- salt
- quaternary phosphonium
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims description 11
- 239000003792 electrolyte Substances 0.000 title description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 14
- 239000004327 boric acid Substances 0.000 claims description 14
- 150000004714 phosphonium salts Chemical group 0.000 claims description 11
- 239000008151 electrolyte solution Substances 0.000 claims description 9
- 239000002904 solvent Substances 0.000 description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 3
- SZWHXXNVLACKBV-UHFFFAOYSA-N tetraethylphosphanium Chemical compound CC[P+](CC)(CC)CC SZWHXXNVLACKBV-UHFFFAOYSA-N 0.000 description 3
- OZJPLYNZGCXSJM-UHFFFAOYSA-N 5-valerolactone Chemical compound O=C1CCCCO1 OZJPLYNZGCXSJM-UHFFFAOYSA-N 0.000 description 2
- ZXULZCCIIYDGCE-UHFFFAOYSA-N CC[PH3]C Chemical compound CC[PH3]C ZXULZCCIIYDGCE-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- PMDCZENCAXMSOU-UHFFFAOYSA-N N-ethylacetamide Chemical compound CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 description 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- XCPGSFBEQZMSTL-UHFFFAOYSA-N butyl(triethyl)phosphanium Chemical compound CCCC[P+](CC)(CC)CC XCPGSFBEQZMSTL-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- UUWXBQMAEMOZSL-UHFFFAOYSA-N dimethyl(dipropyl)phosphanium Chemical compound CCC[P+](C)(C)CCC UUWXBQMAEMOZSL-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- BJQWBACJIAKDTJ-UHFFFAOYSA-N tetrabutylphosphanium Chemical compound CCCC[P+](CCCC)(CCCC)CCCC BJQWBACJIAKDTJ-UHFFFAOYSA-N 0.000 description 2
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- OOWFYDWAMOKVSF-UHFFFAOYSA-N 3-methoxypropanenitrile Chemical compound COCCC#N OOWFYDWAMOKVSF-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- KBPMCIUSWJGRNU-UHFFFAOYSA-N B([O-])([O-])[O-].C(C)[P+](CC)(CC)CC.C(C)[P+](CC)(CC)CC.C(C)[P+](CC)(CC)CC Chemical compound B([O-])([O-])[O-].C(C)[P+](CC)(CC)CC.C(C)[P+](CC)(CC)CC.C(C)[P+](CC)(CC)CC KBPMCIUSWJGRNU-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 description 1
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 description 1
- -1 NlN-diethylformamide Chemical compound 0.000 description 1
- 150000008043 acidic salts Chemical class 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- YQPAAVMEUPILEE-UHFFFAOYSA-N butyl(trimethyl)phosphanium Chemical compound CCCC[P+](C)(C)C YQPAAVMEUPILEE-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- BBWVMXYKVQQWCK-UHFFFAOYSA-N dibutyl(dimethyl)phosphanium Chemical compound CCCC[P+](C)(C)CCCC BBWVMXYKVQQWCK-UHFFFAOYSA-N 0.000 description 1
- RBECNRCKEQGFRU-UHFFFAOYSA-N diethyl(dimethyl)phosphanium Chemical compound CC[P+](C)(C)CC RBECNRCKEQGFRU-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- IQLVJVXTKNBZRC-UHFFFAOYSA-N ethyl(trimethyl)phosphanium Chemical compound CC[P+](C)(C)C IQLVJVXTKNBZRC-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- PLNPRGLZZXAKGE-UHFFFAOYSA-N methyl(tripropyl)phosphanium Chemical compound CCC[P+](C)(CCC)CCC PLNPRGLZZXAKGE-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- AJFDBNQQDYLMJN-UHFFFAOYSA-N n,n-diethylacetamide Chemical compound CCN(CC)C(C)=O AJFDBNQQDYLMJN-UHFFFAOYSA-N 0.000 description 1
- KERBAAIBDHEFDD-UHFFFAOYSA-N n-ethylformamide Chemical compound CCNC=O KERBAAIBDHEFDD-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical compound [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- BXYHVFRRNNWPMB-UHFFFAOYSA-N tetramethylphosphanium Chemical compound C[P+](C)(C)C BXYHVFRRNNWPMB-UHFFFAOYSA-N 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
- XKFPGUWSSPXXMF-UHFFFAOYSA-N tributyl(methyl)phosphanium Chemical compound CCCC[P+](C)(CCCC)CCCC XKFPGUWSSPXXMF-UHFFFAOYSA-N 0.000 description 1
- WJLSOXBTGDOFOQ-UHFFFAOYSA-N tributyl(propyl)phosphanium Chemical compound CCCC[P+](CCC)(CCCC)CCCC WJLSOXBTGDOFOQ-UHFFFAOYSA-N 0.000 description 1
- TZWFFXFQARPFJN-UHFFFAOYSA-N triethyl(methyl)phosphanium Chemical compound CC[P+](C)(CC)CC TZWFFXFQARPFJN-UHFFFAOYSA-N 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- YGDBTMJEJNVHPZ-UHFFFAOYSA-N trimethyl(propyl)phosphanium Chemical compound CCC[P+](C)(C)C YGDBTMJEJNVHPZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Networks Using Active Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明によれば、電導度の高い優れたコンデンサ用電解
液（以下単に電解液と称することがある）が得られる。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application According to the present invention, an excellent electrolytic solution for capacitors (hereinafter sometimes simply referred to as electrolytic solution) with high conductivity can be obtained.
従来の技術
］ンデンサの特性は種々の要因によって決定されている
が、特にコンデンサ君子とともに外装ケースに収納され
る電解液の特性は、インピーダンスあるいは等価直列抵
抗（ＥＳＲ）に大きな影響を及ぼすことが判明している
。[Prior art] The characteristics of a capacitor are determined by various factors, but it has been found that the characteristics of the electrolyte, which is housed in the outer case together with the capacitor, have a particularly large effect on the impedance or equivalent series resistance (ESR). are doing.
たとえば、中高圧用電解コンデンサには、エチレングリ
コール溶媒に硼酸もしくはそのアンモニウム塩を溶解さ
せた電解液が用いられているっが、電導度が低く、コン
デンサの等価直列抵抗が高いという欠点を有している。For example, electrolytic capacitors for medium and high voltage use use an electrolyte solution in which boric acid or its ammonium salt is dissolved in an ethylene glycol solvent, but this has the drawbacks of low conductivity and high equivalent series resistance of the capacitor. ing.
発明が解決しようとする問題点
このため、近年多用されているスイッチングレギュレー
タの平滑用など、高周波領域にまで低等価直列抵抗が要
求されるものには使用することができない。Problems to be Solved by the Invention For this reason, it cannot be used in applications that require low equivalent series resistance even in the high frequency range, such as smoothing of switching regulators that have been frequently used in recent years.
また、この電解液は用いているエチレングリコール溶媒
の粘度が高く、凝固点が比較的高いことなどから、電解
液の電導度が低温で著しく減少し、電解コンデンサの低
温特性が悪く、さらに、エチレングリコールと硼酸との
エステル化反応で生ずる学究の水分のため１００℃を越
える五屏コンデンサには使用できない等、使用温度範囲
が狭いという欠点がある。In addition, because the ethylene glycol solvent used in this electrolyte has a high viscosity and a relatively high freezing point, the conductivity of the electrolyte decreases significantly at low temperatures, resulting in poor low-temperature characteristics of electrolytic capacitors. It has the drawback of a narrow operating temperature range, such as the fact that it cannot be used in five-screen capacitors with temperatures exceeding 100°C due to the moisture generated in the esterification reaction between boric acid and boric acid.
問題点を解決するための手段
本発明者等は、上記硼酸系１毬解液の欠点を解決すべく
鋭意検討を行ない、従来の硼酸のアンモニウム塩が溶解
しなかったγ−ブチロラクトンやＮ。Means for Solving the Problems The present inventors have conducted intensive studies to solve the drawbacks of the above-mentioned boric acid-based monomer dissolution solution, and have used γ-butyrolactone and N, which conventional ammonium salts of boric acid do not dissolve.
Ｎ−ジメチルホルムアミド等の非プロトン性溶媒に硼酸
の四級ホスホニウム塩が溶解し、高い屯導度を示すこと
を見い出し本発明を完成した。The present invention was completed by discovering that a quaternary phosphonium salt of boric acid dissolves in an aprotic solvent such as N-dimethylformamide and exhibits high tonality conductivity.
即ち、本発明は硼酸の四級ホスホニウム塩を溶質として
使用することを特徴とするコンデンサ用電解液を提供す
るものである。That is, the present invention provides an electrolytic solution for a capacitor characterized by using a quaternary phosphonium salt of boric acid as a solute.
発明の詳細な説明
本発明において溶質として用いられる硼酸の四級ホスホ
ニウム塩における四級ホスホニウム塩トしては、テトラ
メチルホスホニウム、テトラエチルホスホニウム、テト
ラエチルホスホニウム、テトラブチルホスホニウム、メ
チルトリエチルホスホニウム、メチルトリプロピルホス
ホニウム、メチルトリブチルホスホニウム、ジメチルジ
エチルホスホニウム、ジメチルジプロピルホスホニウム
、ジメチルジブチルホスホニウム、トリメチルエチルホ
スホニウム、トリメチルプロピルホスホニウム、トリメ
チルブチルホスホニウム、エテルトリブチルホスホニウ
ム、エテルトリブチルホスホニウム、ジメチルジプロピ
ルホスホニウム、ジエチルジプチルホスホニウム、トリ
エチルプロピルホスホニウム、トリエチルブチルホスホ
ニウム、プロピルトリブチルホスホニウム、ジプロピル
ジプチルホスホニウム、トリエチルブチルホスホニウム
等の脂肪族四級ホスホニウム塩および、１．１−ジメチ
ルホスホラニウム、１−メチル−１−エチルホスホラニ
ウム、１．１−ジエチルホスホラニウム、１．１−ジエ
チルホスホラニウム、１−メチル−１−エチルホスホラ
ニウム、１．１−ジエチルホスホラニウム、１，１−ベ
ンタメチレンホスホリナニウム等の脂環式四級ホスホニ
ウム塩を例示することができる。Detailed Description of the Invention Examples of the quaternary phosphonium salts in the quaternary phosphonium salts of boric acid used as solutes in the present invention include tetramethylphosphonium, tetraethylphosphonium, tetraethylphosphonium, tetrabutylphosphonium, methyltriethylphosphonium, and methyltripropylphosphonium. , methyltributylphosphonium, dimethyldiethylphosphonium, dimethyldipropylphosphonium, dimethyldibutylphosphonium, trimethylethylphosphonium, trimethylpropylphosphonium, trimethylbutylphosphonium, ethertributylphosphonium, ethertributylphosphonium, dimethyldipropylphosphonium, diethyldipylphosphonium, triethylpropyl Aliphatic quaternary phosphonium salts such as phosphonium, triethylbutylphosphonium, propyltributylphosphonium, dipropyldipylphosphonium, triethylbutylphosphonium, and 1.1-dimethylphosphoranium, 1-methyl-1-ethylphosphoranium, 1 .Alicyclic rings such as 1-diethylphosphoranium, 1.1-diethylphosphoranium, 1-methyl-1-ethylphosphoranium, 1.1-diethylphosphoranium, 1,1-bentamethylenephosphoranium, etc. A quaternary phosphonium salt of the formula can be exemplified.
本発明の硼酸の四級ホスホニウム塩を溶解させる溶媒と
しては、Ｎ−メチルホルムアミド、Ｎ−エチルホルムア
ミド、ＮｌＮ−ジエチルホルムアミド、Ｎ、Ｎ−ジエチ
ルホルムアミド、Ｎ−メチルアセトアミド、Ｎ−エチル
アセトアミド、Ｎ、Ｎ−ジメチルアセトアミド、Ｎ、Ｎ
−ジエチルアセトアミド、Ｎ−メチルピロリジノン等の
アミド溶媒、γ−プチロラクトン、γ−バレロラクトン
、δ−バレロラクトン等のラクトン溶媒、エチレンカー
ボネート、プロピレンカーボネート、ブチレンカーボネ
ート等のカーボネート溶媒、エチレングリコール、グリ
セリン、メチルセロソルブ等のアルコール溶媒、３−メ
トキシプロピオニトリル等のニトリル溶媒、およびトリ
メチルホスフェート等の燐酸エステル溶媒の単独ちるい
は混合溶媒を例示することができる。Examples of the solvent for dissolving the quaternary phosphonium salt of boric acid of the present invention include N-methylformamide, N-ethylformamide, NlN-diethylformamide, N,N-diethylformamide, N-methylacetamide, N-ethylacetamide, N, N-dimethylacetamide, N,N
- Amide solvents such as diethylacetamide and N-methylpyrrolidinone, lactone solvents such as γ-butyrolactone, γ-valerolactone, and δ-valerolactone, carbonate solvents such as ethylene carbonate, propylene carbonate, butylene carbonate, ethylene glycol, glycerin, methyl Examples include alcohol solvents such as cellosolve, nitrile solvents such as 3-methoxypropionitrile, and phosphoric acid ester solvents such as trimethyl phosphate, alone or in combination.
上記溶媒に対する硼酸の四級ホスホニウム塩の彩屏量は
砲和濃度μ下、好ましくは１〜４０１「量％で、ちる。The color coverage of the quaternary phosphonium salt of boric acid in the above solvent is below the bombardment concentration μ, preferably 1 to 401% by weight.
また、上記４解液中の溶解塩は中性塩でも酸性塩でも良
いっ
本発明の電解液は、本質的には、ＩＡ酸の四級ホスホニ
ウム塩と溶媒よりなるが、社蝕防止、副れ１流の低減等
、種々の目的で少ｌの助溶貢を添加しても差し支えない
。In addition, the dissolved salt in the above-mentioned 4 solution may be a neutral salt or an acidic salt. The electrolytic solution of the present invention essentially consists of a quaternary phosphonium salt of IA acid and a solvent, A small amount of auxiliary tribute may be added for various purposes such as reducing the flow rate.
発明の効果
本発明で溶質として使用する硼酸の四級ホスホニウム塩
は溶媒に対する溶解比が良く、その′電解液は高い電導
度を示し、凝固点〜ｌし点範囲の広い溶媒と伴に用いる
ことにより、筺用崖度範囲の広いコンデンサ用電解液と
なる。Effects of the Invention The quaternary phosphonium salt of boric acid used as a solute in the present invention has a good solubility ratio with respect to the solvent, and its electrolyte exhibits high conductivity. This is an electrolyte for capacitors with a wide range of precipitance for cases.
実験例
以下に実施例、比較例を挙げて本発明を更に具体的に説
明する。EXPERIMENTAL EXAMPLES The present invention will be explained in more detail below with reference to Examples and Comparative Examples.
実施例１
γ−ブチロラクトン溶媒に２０重オフ０の硼酸のテトラ
エチルホスホニウム塩を溶解させて電解液を得た。この
電解液の２５℃における環４度は２．８ ｍ５１０ｎで
あり、＋、−一組のアルミニウム平滑箔に４ｍＶ−の定
辺流印加時の火花発生電圧ば４２０ｖであった。Example 1 An electrolytic solution was obtained by dissolving a 20% off-0 boric acid tetraethylphosphonium salt in a γ-butyrolactone solvent. The ring 4 degree of this electrolytic solution at 25 DEG C. was 2.8 m510n, and the spark generation voltage when a constant current of 4 mV- was applied to a pair of smooth aluminum foils was 420 V.
実施例２
実施例１において、硼酸のテトラエチルホスホニウム塩
の代わしに、硼酸のテトラブチルホスホニウム塩を受用
したこ解液の屯導度および火花発生電圧は、それぞれ、
０ 、９ ｒｎＳ／ｃｒｎ、５２０Ｖであった。Example 2 In Example 1, the tetrabutylphosphonium salt of boric acid was used instead of the tetraethylphosphonium salt of boric acid. The tonic conductivity and spark generation voltage of the solution were as follows:
0,9 rnS/crn, 520V.
比較例
γ−ブチロラクトン容媒に従来の−酸アンモニラムを１
０重量％加え、加熱したが、溶解せず、電解液の使用に
は不適であった。Comparative Example 1 of conventional ammonium acid was added to the γ-butyrolactone medium.
Although 0% by weight was added and heated, it did not dissolve and was unsuitable for use as an electrolytic solution.
Claims (1)
を特徴とするコンデンサ用電解液。An electrolytic solution for capacitors characterized by using a quaternary phosphonium salt of boric acid as a solute.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14458786A JPS631020A (en) | 1986-06-20 | 1986-06-20 | Electrolyte for capacitor |
| EP87304335A EP0246825B1 (en) | 1986-05-20 | 1987-05-15 | Quaternary salt solution electrolyte for electrolytic capacitors |
| DE8787304335T DE3768141D1 (en) | 1986-05-20 | 1987-05-15 | ELECTROLYTIC SOLUTION OF QUATERNAIAL SALTS FOR ELECTROLYTIC CAPACITOR. |
| US07/050,574 US4774011A (en) | 1986-05-20 | 1987-05-18 | Electrolyte for aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14458786A JPS631020A (en) | 1986-06-20 | 1986-06-20 | Electrolyte for capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS631020A true JPS631020A (en) | 1988-01-06 |
Family
ID=15365563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14458786A Pending JPS631020A (en) | 1986-05-20 | 1986-06-20 | Electrolyte for capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS631020A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931257A1 (en) * | 1988-09-22 | 1990-04-05 | Mitsubishi Electric Corp | BRUSHLESS MOTOR WITH HALL EFFECT ELEMENTS |
-
1986
- 1986-06-20 JP JP14458786A patent/JPS631020A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931257A1 (en) * | 1988-09-22 | 1990-04-05 | Mitsubishi Electric Corp | BRUSHLESS MOTOR WITH HALL EFFECT ELEMENTS |
| US4952830A (en) * | 1988-09-22 | 1990-08-28 | Mitsubishi Denki Kabushiki Kaisha | Brushless motor with hall elements |
| DE3931257C2 (en) * | 1988-09-22 | 1992-11-05 | Mitsubishi Denki K.K., Tokio/Tokyo, Jp |
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